Question

exercitiul 8 va rooogg​

Answer 1

a)  x+2/x= 9/7

Le inmultim in diagonala

(x+2)x7=9x

7x + 14 = 9x

7x-9x+14= 0

-2x= -14 | x (-1)

2x= 14

x=7

b) x/x+1=2/13

Faci la fel

13x = (x+1)x2

13x= 2x+2

13x-2x = 2

11x = 2

x = 2/11

c) x/5= x+2/25

25x= (x+2)x5

25x= 5x + 10

25x-5x = 10

20x= 10

x = 10/20

x= 1/2

Sper ca te am ajutat

"/" inseamna supra